Dumping-wagon.



PATENTBD MAR. 28, 1905.

C. J. HANDEL.

DUMPING WAGON.

APPLIoATIoN FILED Dna. 9v, 1904.

w/TNESSS;

UNITED STATES Patented March 28, 1905.

PATENT OFFICE.

DUMPlNG-WAGON.

SPECIFICATION forming part of Letters Patent No. 785,947, dated March28, 1905.

Application filed December 9, 1904. Serial No. 236,097.

To all whom, t muy concern:

Be it known that I, CHRIsTorHAR J. HANDEL, a citizen of the UnitedStates, residing at Buffalo, in the county of Erie and State of NewYork, have invented new and useful Improvements in Dumping-VVagons, ofwhich the following is a specification.

This invention relates more particularly to that class of dumping-wagonsin which the bottom moves vertically toward and from the lower end ofthe box. In dumping-wagons of this character as heretofore constructedthe bottom has beenraised and held in its closed position by a liftingmechanism comprising a drum connected with the bottom, a rock-leverhaving a vertically-swinging actuating-pawl engagingwith a ratchet-wheelon the drum, and a vertically-swinging detent-pawl also engaging withthe ratchet -wheel. This construction of bottom-lifting mechanism isobjectionable inasmuch as the jolt of the wagon upon dropping into ahole or running against an obstruction is liable to throw the pawls outof engagement from the ratchet-wheel, and thereby accidentally dump theload. For the purpose of preventing release of the bottom by verticaljolting of the wagon an auxiliary locking or holding device is providedfor the hoisting-drum, which is separate from the ratchet mechanism andwhich has its movable part operating in a horizontal direction, so thatthe same is unaffected by the vertical vibration or jolting to which thewagon is subjected.

A further object of my invention is to improve the means of mounting thedrum on the wagon-body and provide simple means for throwing theactuating and detent pawls of the lifting mechanism simultaneously outof operation.

Tn the accompanying drawings, Figure lis a top plan view of adumping-wagon equipped with my improvements. Fig. 2 is a verticallongitudinal section of the same. Fig. 3 is a cross-section in line 3 3,Fig. 2.

Similar letters of reference indicate corresponding parts throughout theseveral views.

A represents the body of the wagon, which is mounted at its front andrear ends on wheels t d; B, the box or receptacle arranged on the rearpart of the body, and O the movable bottom which closes the lower end ofthe box. This bottom is preferably constructed in a manner common tothis style of wagons and consists of two vertically swinging doorshinged at their outer longitudinal edges to the lower edges of the boxside walls, while their inner opposing edges meet in the raised positionof the doors and form a closure for the lower side .of the box.

The doors are raised by means of chains D D, each of which is secured atits rear end to the rear wall of the box and at its front end to a drumE, arranged in front of the box, while its intermediate portion engagesmovably with the under or outer side of one of the doors. Upon turningthe drum forwardly, or in the direction of the arrow indicated in Fig.52, the doors are raised, during which movement the chains are guided onthe latter by means of rollers or guides c e', arranged at opposite endsof the doors, and also pass around guiderollers @2, arranged on thefront wall of the box, as shown in Figs. l and 2. The drum is arrangedhorizontally and transversely relatively to the box and is journaled atits ends in bearings F F, arranged on the inner sides of the wagon-body,which form practically forward extensions of the longitudinal sides ofthe box. One of these bearings, preferably F, is circular and completelyincloses the adjacent end of the drum, while the other bearing, F',opens upwardly at f, as shown in Figs. l and 3, thereby permitting ofconveny iently inserting the drum in said bearings or removing the sametherefrom when this is necessary for repairs or for other purposes.

G represents a ratchet-wheel which is rigidly secured to the drum nearone end thereof and provided with an annular row of teeth.

H represents a vertically-swinging ratchet orpawl lever having its lowerbifurcated end turning loosely on opposite ends of the ratchetwheel huband provided with a verticallyswinging actuating-pawl t, which ispivoted on the lever and adapted to engage with the teeth of Vtheratchet-wheel.

ln rear of the actuating-pawl is mounted a vertically-swingingdetent-pawl c', which is -pivoted at its rear end on the adjacent frontIOO wall of the box and adapted to engage its front end with theadjacent rear teeth of the ratchet-wheel. Projecting upwardly from therear part of the detent-pawl is a tail or tappet I, arranged in rear ofthe ratchet-lever. During the ordinary operation of turning the drum, soas to raise the bottom of the box, the ratchet-lever during its rearwardmovement is stopped short of engaging' said tailor carrying theactuating-pawl against the detent-pawl, thereby causing both pawls toremain in operative engagement with the ratchet-wheel. When it isdesired to disengagc the drum from the ratchet mechanism, the pawl-leveris moved backwardly into its rearmost position, whereby the same iscaused to engage the tail il and turn the same so as to lift thedetent-pawl out of engagement from the ratchet-wheel,and theactuating-pawl at the same time is engaged with the detentpawl and alsolifted out of engagement with said wheel, as shown by dotted lines inFig. 2.

IVhen the wagon drops suddenly into a hole or runs against anobstruction, the vertical jar or jolt which the wagon receives at thistime is liable to lift the actuating and detent pawls out of engagementfrom the ratchetwheel. When this occurs, the drum would be free to turnbackwardly and open the bottom of the box if other means were notprovided to prevent backward movement of the drum at this time. In orderto guard against this result, an auxiliary locking device is providedfor holding the drum against backward movement, which is unaffected byany vertical jars or vibrations of the wagon. This auxiliary lockingdevice comprises a clutchcollar J, splined or keyed on the drum so as tobe capable of sliding' horizontally lengthwise thereon, but compelled toturn therewith, and a clutch-head K, formed on the closed bearing of thedrum, said collar and head having teeth arranged on their opposingfaces, which are constructed to cooperate for preventing backwardmovement of the drum. rIhe clutch-collar is moved lengthwise on the drumby means of a horizontal shifting-lever M, which is pivoted on across-bar 'ml of the body and pivotally connected with a ring n,arranged in the grooved hub of the clutchcollar.

In the use of the dum ping' mechanism of the wagon the bottom is raisedfor closing the box by oscillating` the ratchet-lever a sufficientnumber of times for this purpose. After the drum has been movedforwardly the required extent for closing the bottom the clutch-collaris moved lengthwise of the drum by means of the shifting-lever forengaging its teeth with those of the clutch-head. The drum is now heldagainst backward rotation by the detent-pawl of the hoisting mechanismand also the clutch of the auxiliary locking mechanism, which deviceshave their movable members constructed and arranged to operate in adirection at right angles to one another. By this means the drum issecurely held against backward rotation,and accidental dropping of thebox-bottom is therefore prevented. In order to further guard againstaccidental release of the clutch, a hasp or catch 0 is employed fordetaehably connecting the shifting-lever with the adjacent part of thewagon-body, as shown in Fig. l.

Then it is desired to dump the load, the ratchet-lever is first swunginto its .rearmost position for releasing the actuating and detent pawlsfrom the ratchetwheel, as shown by dotted lines in Fig. 2, and then theclutch-collar is withdrawn from the clutchhead, thereby releasing thedrum and permitting' the same to be turned backward by the box-bottom asthe same is pressed downwardly by the discharging load.

If desired, the ratchet mechanism may be relieved from wear by throwingthe same out of operation after the bottom has been closed and theclutch members have been engaged for holding the drum against backwardmovement.

My improved bottom-operating mechanism for dumping-wagons is very simplein construction and not liable to get out of order and effectuallyprevents accidental dumping of the load, which frequently occurs inwagons of this kind as heretofore constructed.

I claim as my invention4 l. In a dumping-wagon, the combination of a boxhaving a vertically-swinging bottom, a horizontal drum connected by achain with said bottom, a ratchet mechanism for operating said drumforwardly, and means for preventing backward movement ofthe drumcomprising a locking member which is movable in a direction parallelwith the drum, substantially as set forth.

2. In a du mping-wagon, the combination of IOO a box having avertically-swinging bottom, a y

horizontal drum connected by a chain with said bottom, a ratchetmechanism for operating said drum forwardly comprising a ratchetwheel onthe drum, a lever having an actuating-pawl engaging with saidratchet-wheel,

and a detent-pawl mounted on a stationary support and engaging with saidratchet-wheel, and separate means for preventing backward movement ofthe drum comprising a locking member which is movable lengthwise of thedrum into engagement with a stationary shoulder, substantially as setforth.

3. In a dumping-wagon, the combination of a box having avertically-swinging bottom, a horizontal drum, a chain connecting saidbottom and drum, a ratchet-wheel rigid on said drum, a lever having avertically-swinging pawl engaging with said ratchetwheel for moving thedrum forward, and means for preventing backward movementof said drumcomprising a fixed member, and a horizontallymovable locking membersplined on said drum IIO and adapted to engage with said fixed member,substantially as set forth.

4. 1n a dumping-wagon, the combination of a box having avertically-swinging bottom, a horizontal drum, a chain connecting saidbottom and drum, a ratchet-wheel rigid on said drum, a lever having avertically-swinging pawl engaging with said ratchet-wheel for moving thedrum forward, and means for preventing backward movement of said drumcomprising a ixed clutch-head arranged at one end of the drum andprovided with an annular series of teeth, and a horizontallymovableclutch-collar splined on the drum and having an annular series of teethadapted to engage with the teeth of said head, substantially as setforth.

5. In a dumping-wagon, the combination of a box having avertically-swinging bottom, a horizontal drum, a chain connecting' saidbottom and drum, a ratchet-wheel rigid on said drum, a lever having avertically-swinging pawl engaging with said ratchet-wheel for moving thedrum forward, and means for preventing backward movement of said drumcomprising a lixedwclutch-head arranged at one end of the drum andprovided with an annular series of teeth, a horizontally-movableclutch-collar splined on the drum and having an annular series of teethadapted to engage with the teeth of said head, a shifting-leverconnected with said collar, and a catch for holding said shifting-leverin its operative position, substantially as set forth.

6. In a dumping-wagon, the combination of a box having avertically-swinging bottom, a drum connected by a chain with saidbottom, a ratchet-wheel connected with the drum, a lever, anactuating-pawl pivoted on the lever and normally engaging with saidratchetwheel, a detent-pawl normally engaging said ratchet-Wheel andprovided with a tail, said tail being arranged in the path of said leverand adapted to be turned thereby for lifting said detent-pawl out ofengagement with the ratchet-wheel and said detent-pawl being arranged inthe path of the actuating-pawl and adapted to lift the same out ofengagement with the ratchet-wheel, substantially as set forth.

Witness my hand this 6th day of December,

CHRISTOPHAR J. HANDEL. VVitnesSes:

THEO. L. Porr, EMMA M. GRAHAM.

